Doctor profile · Federal record
Dr. Mark Haas, M.D.
Anatomic Pathology & Clinical Pathology Physician (CMS: Pathology) · Los Angeles, CA
- NPI 1750330478
- Accepts Medicare
- MIPS 84.1 / 100 · 2023
- 44 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
8700 Beverly Blvd
Los Angeles, CA 900481804
(818) 338-8103
fax (818) 338-8119 - Mailing address
-
31255 Cedar Valley Dr, Ste 324
Westlake Village, CA 913627129
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- September 24, 2009
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 207ZP0102X — NUCC code
- State license (1)
- Maryland #D55055
- Medicaid
- MD #457100200
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1750330478. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,481
Distinct HCPCS
6
Medicare allowed
$46,396
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
88350 |
Antibody evaluation, each additional single antibody stain procedure | 837 | 93 | $31 | |
88313 |
Special stained specimen slides to examine tissue including interpretation and report | 318 | 100 | $13 | |
88305 |
Pathology examination of tissue using a microscope, intermediate complexity | 111 | 94 | $40 | |
88346 |
Antibody evaluation, initial single antibody stain procedure | 98 | 93 | $38 | |
88348 |
Electron microscopy for diagnosis | 88 | 83 | $83 | |
88342 |
Special stained specimen slides to examine tissue, initial procedure | 29 | 27 | $37 |
In context: peer comparison
Among 54 peers in Los Angeles Anatomic Pathology & Clinical Pathology Physician, average services per provider: 159. This provider delivers 9.3× the peer median.Open Payments
Industry payments received
All-time total
$49,521
Transactions
24
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Uk Limited | 3 | $27,675.00 | |
| Novartis Pharmaceuticals Corporation | 8 | $9,273.94 | |
| Otsuka Pharmaceutical Development & Commercialization, INC. | 8 | $8,415.07 | |
| Argenx US, INC. | 3 | $2,612.50 | |
| Travere Therapeutics, INC. | 2 | $1,544.38 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Mark Haas's medical specialty?
Dr. Mark Haas practices Anatomic Pathology & Clinical Pathology Physician in Los Angeles, CA.
Where does Dr. Mark Haas practice?
Dr. Mark Haas practices at 8700 Beverly Blvd, Los Angeles, CA 900481804. Office phone: 8183388103.
What is Dr. Mark Haas's NPI?
Dr. Mark Haas's National Provider Identifier (NPI) is 1750330478, issued by NPPES.
Does Dr. Mark Haas accept Medicare assignment?
Yes. Dr. Mark Haas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Haas commonly perform?
Top Medicare-reported procedures in 2023: Antibody evaluation, each additional single antibody stain procedure (HCPCS 88350); Special stained specimen slides to examine tissue including interpretation and report (HCPCS 88313); Pathology examination of tissue using a microscope, intermediate complexity (HCPCS 88305). Source: CMS Medicare Physician & Other Practitioners file.